I decided to replace all the electrolytic capacitors in this old home theater sub as it was starting to act "funny". When a standing fan was turned off, on the same circuit, it would send out a thump. Also, when I turned the power off, it would also make a loud noise. In addition, when connected to no input signal, the sub woofer would be vibrating erratically. I have another sub that did not relay the ground noise from the fan. I also tried it in another home and it exhibited all the same issues therefore I didn't think it was a grounding issue with the home circuit so I figured maybe...

Re: Infinity PS-12 Powered Subwoofer Fired Amplifier

Thanks for the reply Bud, much appreciated!

I'll check to see what the timing is like the next time I use it and go from there.

Mo

Re: Infinity PS-12 Powered Subwoofer Fired Amplifier

First off, just want to thank everyone on this thread! It's one of the most informative I've read in order to try and DIY a project.

I don't have a tonne of electronics experience, but I took a couple courses in high school and it has aided my tinkering ever since.

I own a PS-10 subwoofer, and I've had the same situation as Derek (DoubleD14) where my board is in perfect shape and no caps look to be swollen, however the light on the back of the sub was constantly flickering between green and red and...